Guide for paper-m-achine felts



(No Model.)

L. ENSIGN. 1 GUIDE FOR PAPER MACHINE PBLTS.

No. 432,993. Patented July 29, 1890.

UNITED STATES PATENT OFFICE.

LUTHER ENSIGN, OF ROCHESTER, NE\V YORK.

GUIDE- FOR PAPER-MACHINE FELTS.

SPECIFICATION forming part of Letters Patent No. 432,993, dated July 29,1890.

Application filed January 12, 1889. gerlal lie. 296,126. (No model.)

To all whom it may concern:

Be it known that I, LUTHER ENSIGN, of Rochester, in the county of Monroeand State of New York, have invented a new and useful Improvement inGuides for Paper-Machine Felts, which improvement is fully set forth inthe following specification, and shown in the accompanying drawings.

The object of my invention is to produce an improved guide for the feltsof paper'machines, the same being hereinafter fully described, and moreparticularly pointed out in the claim.

Referring to the drawings, the figures of which are mainly diagrammatic,Figure 1 shows a side elevation of parts of a paper-machine with myimproved guide in place; Fig. 2, a plan, parts being broken away andother parts shown in various positions by full and dotted lines; Fig. 3,drawn to a larger scale, a side elevation of the guide seen, asindicated by arrow as in Fig. 1; and Fig. 4, an end View of the partsseen, as indicated by arrow y in Fig. 3.

Referring to the parts, A is the frame of the paper-machine; B, the maincarryingroller for the-felt, and O O press-rollers. dis the felt forcarrying the web of paper which it receives, as shown at c, or in anyother suitable manner.

(I are carrying-rollers for the felt, which, with the cylinder 13,press-rollers C O, and felt, are all of common construction and allmoving in the ordinary manner in the several directions indicated by theassociated arrows.

The guide for the felt consists of a pivotal bar E, carrying the rollersf and e, the edge rollers 'i 1', the returning'springs 7c k, and thestops 7L h. The bar E is pivoted upon a central pin g, held in the partF of the frame, so as to swing in a horizontal plane. The felt runsbetween the rollers e and f and rests upon the latter roller. The rollere is provided at its ends with short rollers t 2', one at each side ofthe felt, either cylindrical or conical in form, as may be desired.These rollers i t stand a fraction of an inch away from the respectiveedges of the felt when the bar E stands .at right angles with the felt.Should the felt at any time run to one side, it will encounter one orthe other of the rollers 1, and the resulting-friction will cause thatend of the bar E to swing in the direction in which the felt is moving,as indicated by dotted lines in Fig. In case the bar is thus swung bythe felt the'inner end of the roller i, crowded against by the felt,will approach the center longitudinal line of the felt and crowd thelatter back to a central position upon the carryingrollers. \Vhen thefelt has been thus returned to its central position upon the rollers,the friction between it and the roller 1' will cease, and the returning-sprin g 70, that has been stretched by the motion of the bar, willcause the latter to resume its normal position at right angles to theedge of the felt.

it h are stops, which prevent the bar E from swinging too far in eitherdirection, these stops being so placed that when the bar is swungagainst either one of them the edge rollers i twill just touch therespective edges of the felt, the latter being then central upon thecarrying-rollers.

The springs 70 7c are similar in form and equal in tension and connectthe opposite ends, respectively, of the bar E with the frame. Thesesprings act to hold the bar in a position substantially at right angleswith the line of the felt. The springs are connected with the bar atpoints on opposite sides of the pivot-pin g and act against each other,and the position of the bar results from a balance between theiropposite actions. As the rollers z i stand a little apart from the edgesof the felt, as above stated, itis not essential that the bar E shouldoccupy a position exactly at right angles with the line of the felt, andhence any small inequality in the tension of the springs that wouldcause the bar to stand slightly aslant would be of no consequence. \Vhenthe bar is swung against a stop by a sidewise movement of the felt, oneof the springs will be stretched and the other relaxed. As soon as thefriction between the felt and the roller 1' ceases the strained springwill pull the bar back to its normal position. These springs thusconstantly tend to hold the guide mechanism in its proper position, andthey, in combination with the other parts of the guide mechanism,constitute the essential part of my invention.

The rollers z' i are made longitudinally adjustable upon the roller 6,as shown in Fig. 3, they being held to said roller by retainingscrews 0.These rollers may be made of Wood, fabric, or Wood covered with fabric;but I prefer to make them of some yielding material, such asindia-rubber.

WVhat I claim as my invention is A guiding device for the felt of apapermachine, comprising, in combination, a piv- IO otal bar, a rollerheld by said bar beneath the Lil felt, a roller e above the felt,rollers z 6 upon the roller 6, stops for the pivotal bar, and returning-sprin gs for said pivotal bar connected, respectively, with thelatter at points on opposite sides of the pivotal point of the bar andto the frame, substantially as described.

LUTHER ENSIGN. Witnesses:

E. B. WHITMO E, M. L. McDERMoTT.

